graph LR
A["Static LLM<br/>Call"]
A --> C["Tool<br/>Calling"]
C --> D["Single Agent<br/>+ Planning"]
D --> E["Multi-Agent<br/>System"]
style A fill:#00C9A7,stroke:#1C355E,color:#1C355E
style C fill:#9B8EC0,stroke:#1C355E,color:#1C355E
style D fill:#FF7A5C,stroke:#1C355E,color:#1C355E
style E fill:#FF7A5C,stroke:#1C355E,color:#1C355E